Figure Gestures and photo studies

Here is a gesture course from this site on intuos w/ hard round brush
http://fav.me/d6y3kqw
pencil 5 min poses (sorry for the notebook paper)
http://fav.me/d6y3k2p
30 minute pencil
http://fav.me/d6y3lh9
quick willow charcoal gestures from Time magazine (first time using charc)
http://fav.me/d6y3jrz
http://fav.me/d6y3jmq
and 2 studies one in charc one in pastel and compressed charcoal
http://fav.me/d6y3ja7
http://fav.me/d6y3ixj
Any critiques will be greatly appreciated